TeXFlow

{ "Undefined control sequence": { "explanation": "LaTeX doesn't recognize a command you've used", "solution": "Check spelling, ensure required package is loaded, or define the command", "example": "If \\citep is undefined, add \\usepackage{natbib}", "common_causes": [ "Typo in command name (\\ciet instead of \\cite)", "Missing \\usepackage{} declaration", "Command from a package that isn't loaded", "Custom command that hasn't been defined with \\newcommand" ] }, "Missing \\$ inserted": { "explanation": "Math mode content found outside math environment", "solution": "Wrap math content in $ ... $ for inline or \\[ ... \\] for display", "example": "Change: x^2 + y^2 = z^2\nTo: $x^2 + y^2 = z^2$", "common_causes": [ "Using ^ or _ outside math mode", "Math commands like \\frac outside math mode", "Forgetting to close a math environment", "Using math symbols without dollar signs" ] }, "File .* not found": { "explanation": "LaTeX cannot find a required file", "solution": "Check file path, ensure file exists, or install missing package", "example": "If article.cls not found, your TeX installation may be incomplete", "common_causes": [ "Incorrect file path in \\input or \\include", "Missing image file for \\includegraphics", "Package not installed on system", "Typo in filename", "Wrong file extension" ] }, "LaTeX Error: \\\\begin\\{.*\\} on input line .* ended by \\\\end\\{.*\\}": { "explanation": "Mismatched environment begin/end tags", "solution": "Ensure every \\begin{env} has a matching \\end{env}", "example": "\\begin{equation} must end with \\end{equation}, not \\end{align}", "common_causes": [ "Typo in environment name", "Forgetting to close an environment", "Nesting environments incorrectly", "Copy-paste errors" ] }, "Runaway argument": { "explanation": "LaTeX couldn't find the expected closing delimiter", "solution": "Check for missing closing braces }, brackets ], or other delimiters", "example": "\\frac{1 is missing the closing }", "common_causes": [ "Missing closing brace }", "Missing closing bracket ]", "Unmatched delimiters in math mode", "Missing \\\\ at end of table row" ] }, "Package .* Error": { "explanation": "A LaTeX package encountered an error", "solution": "Check package documentation for specific requirements", "example": "babel package errors often relate to language settings", "common_causes": [ "Incompatible package options", "Missing package dependencies", "Outdated package version", "Conflicting packages loaded" ] }, "Dimension too large": { "explanation": "A dimension exceeds TeX's maximum allowed value", "solution": "Reduce the size or scale of the problematic element", "example": "Images that are too large should be scaled: \\includegraphics[width=0.8\\textwidth]{image}", "common_causes": [ "Image dimensions too large", "Accumulated spacing exceeds page size", "Infinite loops in calculations", "Recursive macros" ] }, "Extra alignment tab has been changed to \\\\cr": { "explanation": "Too many & symbols in a table or align environment", "solution": "Check that number of & symbols matches number of columns", "example": "In {tabular}{cc}, each row should have at most one &", "common_causes": [ "Extra & at end of row", "More columns in data than in column specification", "Misunderstanding of column syntax", "Copy-paste errors in tables" ] }, "Missing number, treated as zero": { "explanation": "LaTeX expected a number but found something else", "solution": "Provide a valid number or dimension where required", "example": "\\vspace{} needs a dimension like \\vspace{1cm}", "common_causes": [ "Empty dimension argument", "Missing units (cm, pt, em, etc.)", "Variable not defined", "Syntax error in calculation" ] }, "Paragraph ended before .* was complete": { "explanation": "A blank line appeared where LaTeX didn't expect one", "solution": "Remove blank lines from command arguments", "example": "Don't put blank lines inside \\section{} or other commands", "common_causes": [ "Blank line in command argument", "Blank line in math mode", "Missing closing delimiter", "Incorrect paragraph formatting" ] } }